The 2nd mixer feeds an IF can (L2) which connects to another can (L3) which feeds the noise repair manual ktm 450 exc 2008 blanker diodes.
Mine did have a problem when I bought it (see details below but opening it up to work on it only further convinced me that this radio is built stout!
At a hamfest back in 2002 I came across an icom IC-R70 that was from the estate of.
And found out that when you pull the plug on the display board, the receive pretty much goes dead.
So many other radios make compromises on the number of filters because they do cost money.Icom IC-A6 COM Transceiver 475.00, now: 255.00 (42 reviews features water resistant construction, long life battery, and Icom's Flip-Flop Plus frequency scrolling make this transceiver a winner!The further off the carrier frequency I tuned, the higher pitched the tone.After replacing Q1, the radio quieted down to the point where you could crank the volume all the way with no antenna and the static wasn't uncomfortably loud.I tuned to a beat note and listened as I did this.Several people suggested checking all the screws holding the PCBs were tight.After a bit of head scratching I finally figured out the the jfet isolation amp (Q1) was the problem.My first thought was that the BFO was on (which it shouldn't be in AM mode but when I check the output with a frequency counter I get good values when in SSB and CW mode, but no count when in AM mode.The input to the noise blanker is pulled from between L2 and L3 and fed into a jfet amplifer (Q1) which feeds an op-amp (IC1) which drives a transistor (Q3) that is used as a switch to turn off and on the noise blanker diodes.When I tuned up another step.180.2 the beat note changed to a weak 200 Hz tone.All trademarks and brands are the property of their respective owners.
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Flightline VHF Airband Mobile Radio - Vehicle Mount 1,341.00, now: 675.00.CM-35.00, cS-P7 cloning software instructions.00.This is kind of a reverse signal tracing-instead of injecting a signal and following it, you have something generating the noise internally and you try to shunt that noise to ground.An alternative to the now discontinued Icom IC-A110 Vehicle Mount system).Icom IC-A24 NAV-COM Transceiver 555.00, now: 289.00 (46 reviews features water resistant construction, long life battery, and Icom's Flip-Flop Plus frequency scrolling make this transceiver a winner!Others suggested checking that the cables running by the display module were properly routed.On a repair mailing list, one person I have a great deal of respect for (Bill, K0ZL) seemed certain the noise was related to the display module.CT-10.00, cT-16.00.Neither of these yielded any change.